Drilling device



W. P. BOVARD.

DRILLING DEVICE.

} APPLICATION FILED JULY 8, I918. 1 ,341,292, Patented May 25,1920,

2 $HEETS--SHEET I.

3140C nioz W. P. BOVARD.

DRILLING DEVICE.

IPPLICATION FILED JULY 8,191 8 Patented M y 25 V 2 SHEETSSHEET 2- UNITEDSTATES PATENT OFFICE.

WILLIAM P. BOVARD, OF MANSFIELD, OHIO, ASSIGNOR TO THE OHIO BRASSCOMPANY, OF MANSFIELD, OHIO, A CORPORATION OF OHIO.

DRILLING DEVICE.

Specification of Letters Patent. Patented May 25, 1920.

Application filed July 8, 1918. Serial No. 243,863.

To all whom it may concern: I

Be it known that I, \VILLIAM. 1". .Bovnnu, a citizen of the UnitedStates, residing at Mansfield, in the county of Richland and State ofOhio, have invented certain new and useful Improvements in DrillingDevices, of which the following is a specification.

This invention relates to improvements in portable drilling devices andhas for its primary object the provision of means for rigidly securingthe device to a rail, or any other suitable support to which it is desired to attach the mechanism.

Another object of the invention is to provide means of the characterreferred to which will be durable and simple in construction, effectiveand efficient in operation, and which render the device capable of beingreadily and conveniently installed or detached from its operativeposition.

A further object of the invention is to provide holding means forrigidly securing a drilling device to one side of a railby engaging oneor more surfaces thereof, and which when secured in operative positionwillnot form an obstruction in the path of or interfere with passingcars.

To the attainment of these ends and the accomplishment of other new anduseful objects, as will appear, the inventlon consists in the featuresof novelty in the construction, combination and arrangement of theseveral parts hereinafter more fully described and claimed and shown inthe ac-- companying drawings illustrating the embodiment of theinvention.

It is not the intention to cover herein the invention set forth andclaimed in the ap plicants co-pending application Serial #137,164 filedDec. 15, 1916, as the present application is an improvement thereon.

Figure 1 is a plan View of a portlon of a rail and shows a drillingdevice positioned and secured thereto by holding means constructed inaccordance with my invention.

Fig. 2 is a view looking at the bottom of the device 01' toward thedrill bit (6).

Fig. 3 is a similar view as Fig. 1 and in which the drilling device andthe holding means are shownin cross-section in order to illustrate theconstructional arrangement of the various parts.

Fig. 4 is an end view of a portion of a rail and showsa portion of thedrilling device positioned thereto, and 1 illustrates also,

the holding means in position prior to being forced into engagement withthe opposing surfaces of the rail for securing the drilling device tothe rail.

Referring to the drawings and in which like reference charactersindicate the same parts in the different views: (1) designates the bodyof a portable drilling device and which may be constructed as shown, thelower end comprising a lateral projection (2), provided with an apertureto receive the sleeve (3) which may be removably mounted therein by thenut (41:). The sleeve (3) forms a guide and a bearing for one end of thespindle (5), the lower end of which has a drill (6), mounted therein inthe usual manner, and its opposite end may be externally threaded forengagement with the internally threaded sleeve (7), mounted in the upperend of thebody and in alinement with the sleeve It will be obvious fromthe foregoing and by referring to Fig. 3 that by rotating the sleeve(7), for which purpose the handle (8) may be provided, and holding thespindle (5) against rotation that by virtue of the threaded connectionof the 'parts the drill may readily be moved into and out of engagementwith the part to be perforated. In practice the drill is moved intoengage ment with the web of the rail or other part to be perforated byrevolving the sleeve (7) in the manner above stated; the latter is thenlooked against further rotation as, for instance, by manipulating thehand wheel (9) in the direction to cause the spring (10) to exertpressure upon the plug (11), there by to cause the end surface of thelatter to yieldingly engage the sleeve and resist further rotationthereof. Rotary movement is then imparted to the spindle (5) bvoperating the lever (12) which may be provided and which. forconvenience in operation may be equipped with a ratchet device (13)through which it engages the spindle.

The forward feeding movement of the spindle may be further regulated bymaking the friction between (7) and (11) such that if the drill bit (6)is feeding too fast for the amount of cutting, then the increasedpressure between parts 5) and (7) will be great enough to overcome thefriction. between the parts (7) and (11) and hence part (7) will for aperiod 'of time revolve with part (5), thereby automatically stoppingthe forward feeding movement of spindle (5) and drill bit (6).

It will be obvious that by rotating the spindle (5) in one direction, bymeans of its threaded connection with the sleeve (7), the cutting edgesof the drill will be constantly urged into engagement with the part tobe perforated and that by continued rotation thereof the drill will beforced to cut its way through the object.

The above description briefly outlines a portable drilling device whichis well known in the art and for which I make no claim other than incombination with my improved holding and securing means and which I haveselected for the purpose of illustrating the embodiment of the latter.It will be understood, however, that my invention is not limited to usewith drilling devices of this specific character but is equally adaptedto be applied to drilling devices of other types and also with deviceswhich are used for various other urposes.

In accordance with my invention the lower end of the body. (1) is formedwith an extension (1 1) provided with rests and (16), the end surfacesof which are disposed in a plane at right angles to the axis of thespindle and are adapted to seat against the surface of the web of a railor a support to which the device is to be secured. The extension (let)has an opening (17) passing therethrough to receive the stem (19) andwhich is inclined relatively to the place in which the end surfaces ofthe rests (15) and (16) are disposed; the opening at the outer end ofthe extension is located at a greater distance from the longitudinalaxis of the support than the opening of its inner end.

Elongated slots (18) are formed in opposite sides of the extension (14)and in alinement with each other and communi-v cate and are in line withthe opening (17). A stem (19) having a wedging member (20) mountedadjacent one end thereof by means of the set screw (21) is slidablyreceived within the opening (17). The wedging member extends through theslots 18 wherein it is longitudinally movable relatively to the opening(17), and has cutting edges (22) provided on its ends, the purpose ofwhich will be described hereinaften When it is desired to secure thedevice to a rail or the like it is positioned thereto as illustrated inFig. 3 with the rests (15) and (16) hearing against the surface thereof.The stem (19) is then moved inward until the cutting edges (22) of thewedge come in contact with the opposing surfaces (23),

of the rail as shown in Fig. 4. Continued movement of the stem in thesame direction by applying impact forces to the end (24) thereof, as forinstance by striking it a blow with a hammer, will cause the wedgemember (20) to move between the opposing surfaces (23) and toward theweb of the rail, and by virtue of the relation of the parts the cuttingedges (22) will be caused to penetrate the opposing surfaces of therail. )Vhen thus positioned the device will be rigidly secured to therail and for the purpose of preventing relative movement of the bodymember with respect to the stem (19), I provide a locking screw whichwhen. adjusted to engage the stem interlocks the body member therewith.

The rest acts as a thrust or pressure member when the device is beingoperated and the drill is forced against the support. The thrust orpressure member (15) prevents the rotation of the device about theengaging point of the wedge (20) with the support, which acts as apivot. This construction permits the use of only one securing wedge toattach the device to the support.

For the purpose of effecting the release of the wedge member (20), topermit the removal of the device, I provide a releasing collar (26)which is preferably mounted in guides or slots (27), formed in oppositesides of the projection (2). '1 hese slots are formed by cutting away aportion of the sides at the lower end of the projection (2), and

likewise a corresponding portion at the upper end of the enlargedportion of the sleeve Thus it will be noted that the releasing collar isretained in position by the sleeve (3), and may readily be inserted intoor removed from operative position. 'i'he collar (26) is formed with anelongated opening (28) which. permits movement; thereof to cause its end(29) to engage or disengage the end of the stem When it is desired toremove the device, the stem (19) is rendered movable by releasing thelocking screw then the releasing collar (26) is moved into engagementwith the end of the stem and by applying impact forces to the end (30)of the latter, as by striking it a blow with a hammer, the wedge member(20) will be forced to disengage the opposing surfaces (23) of the railand the device will be released therefrom.

Having fully described my invention. and illustrated the embodiment ofthe same, I do not wish to be limited to the details of the constructionshown since these can he obviously changed without departing from thespirit and scope of the invention.

What claim as new and desire to secure by Letters Patent is:

1.. A drilling mechanism having a spindle for attachment to a supportprovided with a slidably mounted means to engage the support and securethe mechanism thereto and means encircling the spindle and engaging theslidably mounted means to move the slidably mounted means out ofengagement with the support when impact blows are applied to the releasemeans.

2. A holding device for attachment to a support provided with a flangeor flanges comprising in combination a body member, a singleone-piece-wedge-member slidably mounted in the bod member to engage thesupport flange or anges, mechanism pro- 'vided on the frame to one sideof the wedge member and adapted, to en age the support and tending toturn the b0 y member about the point of engagement of the wedgememherand support, and means positioned on the frame but on the opposite sideof the wedge-member from that carrying the mechanism and which meansopposes the rotation of the body.

3. A holding device for attachment to a support provided with a flangeor flanges comprising in combination a body member, a wedging meansslidably mounted in the body member to engage the support flange orflanges, mechanism provided on the frame to one side of the wedgingmeans and adapted to engage the support and tending to turn the bodymember about the point of engagement of the wedging means and support,and means positioned on the frame but on the opposite side of thewedging means from that carrying the mechanism and which means opposesthe rotation of the body.

In testimony whereof I affix my signature.

WILLIAM P. BOVARD.

